Crusher.



A. W. WARSEN.

CRUSHER.

APPLICATION FILED MAY 20. 19M. RENEWED JUNE 18. I915.

LlfiEfiQfi. Patented July 27, 1915.

A TTOR/VEYS llli AUGUST W. WARSEN, OF NEW YORK, N. Y.

GRUSHER.

Specification of Letters Patent.

Patented July 27, 1915.

Application filed May 20, 1914, Serial No. 839,780. Renewed June 18,1915. Serial N0. 34,962.

To all whom it may concern:

Be it known that I, AUGUST W. WARSEN, a citizen of the United States,and a resident of the city of New York, borough of Brooklyn, in thecounty of Kings and State of New York, have invented a new and ImprovedCrusher, of which the following is a full, clear, and exact description.

My invention relates to crushers of the rotary type; and the objectthereof is to provide a simple, strong, inexpensive and emcient crusherin which the translating roller is prevented from vibration during thecrushing.

With the above and other objects in View, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the specification, similarcharacters of reference indicate corresponding parts in all the viewsand- Figure 1 is a side elevation of a roller crusher embodying myinvention; Fig. 2 is a plan view of the washer interposed between theanti-vibration device and the frame of the crusher; Fig. 3 is ahorizontal section through the frame of a crusher showing a modifiedstructure of the anti-vibration means; and Fig. 4 is an elevation of thewasher interposed between the translating bearing of the crushing rollerand the anti-vibrating device.

In the roller crushers in use at present, the translating roller ismaintained against the stationary roller by a series of compressionsprings mounted with their axes parallel to the axis of the guide boltwhich controls the compression of the springs; and due to this positionof the springs, when they are once set into vibration they continue tovibrate and, therefore, interfere with the crushing of the material.Furthermore, this continuous vibration, due to the harmonic motion setin the springs, is transmitted to the frame and other parts of thecrusher and thereby reduces its life.

To obviate-the above objections and prolong the life of the crusher, andalso to obtain better final products of crushing, I provide ananti-vibration device for the translating roller, which consists of afirst-class lever formed of a pair of contacting arms 5 and 6 (seeFig. 1) spaced at one end; and adjacent that spaced end they arefulcrumed to each other by providing a recess 7 in the arm 5, which isengaged by a projection 8 in arm 6. The two arms are maintained againsteach other by compression springs 9 mounted on each side of the arms 5and 6 on bolts 10 provided at the contacting ends of the arms 5 and 6,said bolts 10 having their axes at right angles to the axis of thefulcrum of the arms 5 and 6. The arms 5 and 6 at their spaced end areeach provided with alining apertures 11 the axis of which is parallel tothe axis of the bolts 10 and through which aperture projects the guidebolt 12 which is connected to the bearings 13 slidably mounted in aframe 14, said bearings 13, of which only one is shown, carrying atranslating roller 15, the movement of which is controlled by thecompression springs 9.

Positioned intermediate the anti-vibrating means and the frame 14 is ablock or washer 16 mounted on the guide bolt 12 and provided on the sidecontacting with the frame with a key 17 engaging a keyway 18 provided inthe frame, whereby said washer is prevented from turning on the bolt 12.The washer 16, on the side facing the arm 5, is provided with a recess19 the axis of which is parallel to the axis of the fulcrum of the arms5 and 6, and which is preferably in a horizontal plane with the axis ofthe guide bolt 12. The arm 5 is provided with a projection 20 engagingthe recess 19 of the washer 16, whereby said arm 5 is fulcrumed on saidwasher, the fulcrum of the arm 5 being lower than the common fulcrum ofthe arms 5 and 6. The arms 5 and 6 are maintained against the washer 16by a nut 21, between which nut and the arm 6 a washer 22 is provided toreduce the friction therebetween through the movement of the arm 6.

The compression springs 9 will maintain the roller 15 against astationary roller 23, their compression being so adjusted that when thetwo rollers 15 and 23 are in proper position the upper parts of the arms5 and 6 are in contact, a. 6., the compression springs 9 cannot expandany farther. When the roller 15 is displaced from the roller 23 by somecause, the arms 5 and 6 are separated, the arm 6 moving on its fulcrum,z. e., the projection 8 turns in the recess 7. Simultaneously the arm 5will also fulcrum on the washer 16 and the springs 9 will be compressed.As soon as the strain separating the rollers is removed, the springs 9will bring the arms 5 and 6 into contact, thus restoring the roller 15to its original position; and any vibration set up in the springs 9cannot move the arms 5 any farther than to bring them in operativecontact. Fur thermore, by providing oppositely acting springs theharmonic motion caused by vibration therein is counteracted. Theposition of the springs 9 on the arms 5 and 6, furthermore, increasesthe resistance to vibration due to the leverage resulting from thedistance of said springs 9 from the guide bolt 12, where the'stresstakes place.

In the modified structure shown in Fig. 3, the first-class lever isplaced between a slidable bearing 2% and a bolt 25 carried by a frame 26of the crusher. Contacting arms 27 and28 are in this case positionedhorizontally to one side of the frame, the arms being maintainedtogether by springs 29 mounted on bolts 30, which bolts are preferablycarried by the arm 27 at the contacting end. At the spaced end the arm27 is provided with a lateral projection 31 engaged by the bolt 25,while the arm 28 is provided at the spaced end with a projection 82engaged in a recess 88 provided ina sliding block or washer 34:positioned between the bearing 24 and the arm 28. The projection 32forms the fulcrum for the arm 28 on the; washer 34. It will be notedthat the axisof the fulcrum for the arm 28 is perpendicular to the axisof the bolts 30 carrying the springs 29. The arm 27 is also fulcrumed inthe arm'28 by engaging the end 35 of the arm 27 adjacent the lateralprojection 31 into a recess 36 provided in the arm 28. It will be notedthat the fulcrum of the arm 27 is offset from the fulcrum of the arm 28but their axes are parallel, the fulcrum of the arm 28 being inalinement with the axis of the bolt 25, a displacement of the hearing 24in the direction of the arrow shown in Fig. 3 will cause the separationof the arms 27 and 28, for the reasons stated for Fig. 1, and the effectproduced by the springs 29 will be similar to what-has been describedfor the springs 9.

From the foregoing description, taken in connection with theaccompanying drawings, the advantage of the construction and operationof the device shown will be readily understood by those skilled in theart to which the invention pertains; and while I have described theprinciple of operation,

together-with the device which I new consider to be the best embodimentthereof, I desire to have it understood that the device shown is merelyillustrative and that such changes may be made when desired as arewithin the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a crusher, a frame, a fixed roller thereon, a translating rollercoacting with the fixed roller, resilient means for maintaining thetranslating roller against the fixed roller, and a pair of fulcrumedarms positioned between the resilient means and the translating roller.

2. In a crusher, a frame, a fixed roller thereon, a second rollercoacting with the fixed roller, bearings mounted to slide in said framecarrying said second roller, resilient means associated with eachbearing, and a pair of relatively movable arms positioned between thebearing and the resilient means, said arms forming a lever of the firstclass.

3. In a crusher, a frame, a fixed roller thereon, a translating rollercoacting with the fixed roller, resilient means for maintaining thetranslating roller against the fixed roller, and a lever of the firstclass formed of two relatively movable arms positioned betweei'i theresilient means and the translating roller, each of said arms of saidlever forming also a lever of the first class. 4. The combination with aroller crusher having a translating roller of an anti-vibrating devicefor the translating roller comprising, a pair of relatively movable armsassociated with the translating roller and a resilient member normallymaintaining said arms together.

5. The combination of a roller crusher having a translating roller of ananti-vibrating device for the translating roller comprising, a pair ofrelatively movable arms associated with the translating roller, each ofsaid arms forming a lever of the first class having a common fulcrum,and resilient means normally maintaining said arms together.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AUGUST IV. VARSEN.

Witnesses:

BENEDICT Jorrn, PHILIP D. RoLLHAUs.

Copies of this patent maybe obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

